Grain separator



Feb. 8 1927.

H. o. FREEMAN GRAIN sEPARAToR Filed Jan.16, 1926 Y i'NvENToR HQI/'66mmATroRNEYS Patented Feb. 3, 1927.

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HENRY o. FREEMAN, or EDEN, rnAHo.

GRAIN SEFARATOR.

application nea January 16,1926. serial unerase breaking up masses ofstraw, grain and chaff as lsuch masses inove across-the Vseparator flooror table -and for causing the straw,

F chaff and grain to'fall vertically at intervals during their passageacross the' separatorV floor or table,whereby practically all the is aVrelatively enlarged fragmentary transverse vertical sectional view ofV aportionof the grain separator. v

Figure 3 is a fragmentary perspective view of one of the sections of themain sepa rator floor. j

. Thejsupporting; structure of the separator may comprise side wallssuch as indi'- cated at 1. While l show Vonly .one iside wall 1, it willbe understood that in practice a pair of theiside wallsv 1 maybevprovided and disposed in spaced parallel relation. An upper separatorfloor generallyindicated at 2 extends between .the side walls 1. Thisupperr separator floor comprises a plurality of juxtaposed longitudinalsections, each of which is substantially U-shaped in cross sectionalcontour.l y

VThese sections,3are arranged in a series which extend transverselyofthe supporting structure or body of the separator 'so thattheouter-.flanges offthelsections that are next ,togthe side members 1l'are disposed fla-twise against attaching and reinforcing bars ll,which' are., rigidly secured to the'sidewalls 1. 'gFasteningdevices,suchas indicated at Y s ecure'the outenflanges of the outer sections 3tothe reinforcing bars The sections?)v between the outer sections 3 arerelatively ar ranged .so that the adjacent flanges of adjacent grainwill be detached from andy separatedy sections 3 are in closecontactwith eachother throughout their length andare fastened to- Y gether bysuitable fastening devices such asindicated at 6. The web portions ofthe res'pecfk 60 tive sections 3 thus will be disposed at the samej Ylevel; The web portions of these sections l3 are curved arcuatelytransversely thereof, the,v concavely curved'surface thereof beingupr-rv permost. These web portions of thesections 3 are imperforate fromtheir front ends forA a short distance asV indicated at Tand are cutaway at S' fora short distance from ythe rear ends of thefse'ctions '3JYThe portion of the web of each section 3 that extends ,be-v tween theimperforate end portion 7 andthe cutaway portion 8 is formed with alongitudinally extending` series of spaced apertures 9. These aperturesare located along the longitudinal median line of the web l5 port-ion ofVeach section 35 and each opening 9 is produced by striking adjacentportions of v the web of each section 3 up-v wardly and rearwardly atthe front edge of each of the openings in the web of the section 3 anddownwardly and forwardlyat the rear edge of the same opening in the webpor'- tion of the section 3, thu'sproducing the up,- wardlyV andrearwardly inclinedv tongues .10.,

at the front edges of theopenings 9 and the 8 downwardly and forwardlyinclined tongues 11 at/the rear edges of the openings 9.

y The flanges of each lsection 3 are symmetrically formed and eachflange has relatively:

deep notches'412 cut therein at, regularly.90

liange.Y The front wall of each notch 12 isv substantially vertical asclearly shownin Figure 1. The portionsof the v'flanges ofl .spacedintervals along 'the ylength ofthe each section 3`which extendbetweenladj acent 95 notches 12 have the edge portions thereof fashionedto incline 'rearwardly and `upwardf,l ly from'eachnotch 12Vtov thevertical wall of the notchl2 next at the rear thereof and these inclinededge portions` ofthe fiangesoffeach section k3 have spacednotches'13-p`roduced therein, the front wall of eachnotch 13 beingvertical V andthe other ,wall of each notch 13 being inclined upwardlyand' rearwardly. The respectivelnotches 13 are. the same depth and itthus will be manifest that the respec- V tive notches 13 whicharelocated between a-d, jacent notches 12 willbe located `at differentlevels, the bottomof each notch v13 other than the first lnotch, 13 of aseries being located at'v a slightlyjjhigherelevel thanuthe precedingnotchlf13.` i .y j f,

no' Y A secondary separator floor indicated generally at 14 may besupported between the side members 1 of the supporting structure of thedevice underneath the main separator floor 2. The secondary separatorfloor 1a comprises a series of channel-shaped longitudinal sections 15.The flangesof the side sections 15 are attached, as at 16 toattachingand reinforcing bars 17 which in turn are secured to the sidewalls 1 and adjacent flanges of adjacent sections 15 are securedtogether by fastening devices 1S. The front end portion of the bottom orweb portion of eachsection 15 is imperforate for a short distanceasindicated at 19in Figure 1 and the.

l from the front edge of each opening 21. The

flanges of each section 15 have notches 2li formed therein7 the frontVwall of veach notch 21being substantially vertical and the rear 'wallof each notch 2st being inclined upwardly and rearwardly as clearlyshown in Figure 1.

'A screen 25 may be supported underneath the separator Hoor 141r-earwardly of the imperforate portions 19 o'f the bottoms of thesections 15 and .forwardly fof the cut away portions 2O of the bodies oftheV sections 15 of said separator floor.` A delivery chute 26 having aforwardly Vand Ydownwardly inclined bottom 27 may be supportedunderneath the screen and a blower fan 28 may be supported in a housing29 having a discharge out-let 30 from which air may be blown underneaththe screen 25 andupwardly through the latter. The details ofconstruction Vof the partswhich' are associated with the separatorfloors 14 and 2 may vary considerably from those illustrated wit-houtdeparting from the spiritand scope ofthe invention as will hereinaftenmore clearly appear.

The operation of the `device is substantially as follows A mass ofvgrain, straw and cha is discharged in any suitable known manner on y theseparatory floor 2. The Y serrated Y and by any suitable known inea-ns,none being shown, onto the Vforward end portion of the separator door 2and 1s movedrearwardly edges `of the flanges of the channel-shapedsections of theV separator 'floor 2 will support the mass of strawfchaifand grain and will break up suoli mass since it vwill be obvious that asthe mass progresses toward the rearward end of the floor 2,cons1derablevertical movement ofthe mass or particles thereof will take place asparticles ofthe mass thereof so that all grain falling onto the bottomsof said sections will slideV toward and through the openings 9. rlheupwardly and rearwardly inclined tongues 10 obstruct the forwardmoven'ient of the grain and guide the kgrain through the v'openings V9.A'The downwardly and forwardly inclined tongues 11 deflect blasts of airfrom the fan 28 upwardly through the openings 9 so that such blasts ofair will not only-aid in .separatthe grain'from the chaff but will aidin breaking up the mass of straw and chaffv on the flanges of thesections 3 and will cause such mass to ride along the edges of theflanges of the sections 8. Also, the air currents which pass upwardlyand rearwardly through the openings 9 will prevent any dust from fallingthrough the openings and the grain thus will be cleaned. The imperforateforward Vend portions 7 of the bot-A toms of the sections 3 of the mainseparator floor extend forwardly of the front 'end'V of the screen 25 sothat the separation of grain pass therethrough and to fall into thedelivery chute 26. Any unthresheclor whole heads or pods of grain whichreach the rearward end portions of the-sections 3 will fall throughtheaperturesS. A return chute '81 for such unthreshed heads or pods ofgrain may be provided. i

The Yseparating action of thesecondary floor 14 is substantially thesame as that of` the fioor 2 and the purpose of the floor 14 istosupplement the action of theseparator floor 2. The sections 15 ofjthesecondary separator floor are of less width than the sections -of themain separator floor. Grain which falls through the openings 9' in Vthebottoms of the sections ofthe main separ tor fioor onto the secondaryseparator floor will pass freely through the openings in the bottomsofthesections of the secondary floor and the secondary separator' Hoorwill effect an additional separationof the grain from any chaff whichmay pass through the openings 9 of the main separator floor with thegrain.V Unt-hreshed heads or pods which SFr fallk through the cut awayportions 8 of the Y sections of the main separator floor` will fallthrough the openings 20 .in the rearward Vend' portions of the sectionsof the secondary floor into the return chute or trough 3l.

It of course will be understood that the openings in the bottoms of thesections of the separator floors may be of any suitable size and thatthe lsections may be of desirable widths. For example, lthe sections andthe openings in the bottoms thereof can be relatively narrow whendesigned for use to effect the separation of clover seeds from the strawand chaff and would be relatively wide when designed for use as aseparator for beans. n

Obviously, the invention is susceptible of embodiment in forms otherthan that which is illustrated in the accompanying drawing and Itherefore consider as my own Vall such ymodifications and adaptationsthereof as fairly fall within the scope of the appended claims.

I claim l. In a separator, a i'oor comprising a plurality of juxtaposedchannel-shaped sections disposed with the fianges thereof turned upwardand having spaced openings in the bottoms thereof, .the upper faces ofthe bottoms of said sections beingconeavely curved transversely thereofand said openings being located along the longitudinal median lines ofsaid bottoms.

'2. In a separator floor, a substantially U- shaped horizontal sectiondisposed with the flanges thereof turned upward, the bottom of saidsection having spaced openings formed a downwardly and forwardlyextending tongue at the rear edge of each opening, said tongues havingeonvexly curved edges, theV Y lianges of said section having notches inthe f edges thereof.

.4. vIn a separator floor, an elongated sec-v tion substantiallyU-shaped in cross section, the bottom of said section havingl the upperface there-of concavely curved transversely thereof and having spacedopenings formed therein along the longitudinal median line Y thereof andhaving an upwardly and rearwardly inclined tongue at the front edge ofeach of said openings and a downwardly and forwardly extending tongue atthey rear edge of each opening, the flanges of said section havingnotches in the edges thereof, the bottom of said section beingimperforate forl a short distance from the forward end thereof therearward end thereof.` Y

5. In a separator floor, an elongated section substantially U-shaped'incross section, said section having spaced openings in the bottomthereof, the flanges of said section having spaced relatively 'deepnotches in the edges thereof and having series of spaced notches of lessdepth in the edges thereofbetween adjacent relatively deep notches, the

notched portions of the sections between adjacent relatively deepnotches being inclined so that the respective second named notches i ybetween adjacent relatively deep notches areA and being `cut away for ashort. distance from f located at different levels, each of saidrelatively deep notches andA each of said more shallow notches having aninclined edge and a substantially vertical edge, all of said infclinedfedges being parallel and all of said substantially vertical edgesbeing parallel.

6.v In a separator floor, an elongated section substantially U-shaped incross section and having openings in the bottom thereof spacedlongitudinally 'of Vthe section, the

flanges of said lsection having spaced relatively deep notches formedtherein, each of said notches having a substantially vertical edge andalso another edge Vregularly iiiclined for its entire length andextending from the base of the substantially vertical edge of onenotchto the topV of thesubstantially vertical edge of an adjacent notch,said j inclined edges having regularly'space'd relatively shallownotches formed therein, each yof said relatively shallow notches havingan inclined edge parallel with the 'inclined edges ofthe deeper notchesand a substan-v tially vertical edge parallel with the substantiallyvertical edges of the deeper notches:

l FHENRYZO. FREEMAN.

